As you may know, TSW2 DLCs always release on consoles at midnight. Luckily, the Australians are already past that point! Consequently, a few channels have begun uploading gameplay of the DB BR 101 loco. I’m going to link a two hour stream recording below. You can easily find more gameplay by typing “Train Sim World 2 101” (or something similar) into the YouTube search bar and looking at the newest videos.
I can’t find it on my PS4, but it seems to be available on the German PlayStation Store website at least. Seems like the link I’m trying to post isn’t working. Update: I found it on the website as well as directly on my PS4 by typing BR 101 in the PS Store search bar!